package top.eggcode.template.config;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.Executor;
import java.util.concurrent.ThreadPoolExecutor;

/**
 * Title:
 * Description: TODO
 * Date: 2021/5/29 7:19
 *
 * @author JiaQi Ding
 * @version 1.0
 */
@Configuration
@EnableAsync
public class ExecutorConfig {

    private static final Logger logger = LogManager.getLogger(ExecutorConfig.class.getName());

    @Bean
    public Executor asyncServiceExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        //配置核心线程数
        executor.setCorePoolSize(5);
        //配置最大线程数
        executor.setMaxPoolSize(10);
        //配置队列大小
        executor.setQueueCapacity(400);
        //配置线程池中的线程的名称前缀
        executor.setThreadNamePrefix("thread-");
        // rejection-policy：当pool已经达到max size的时候，如何处理新任务
        // CALLER_RUNS：不在新线程中执行任务，而是有调用者所在的线程来执行
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        //执行初始化
        executor.initialize();
        return executor;
    }
}
